Journal Articles
Abstract:
In Experiment 1, pigeons chose between
variable- and fixed-interval schedules. The
timer for one schedule was reset by a
reinforcement on that schedule or on either
schedule. In both cases, the pigeons timed
reinforcement on each schedule from trial
onset. The data further suggest that their
behavior reflects two independent processes:
one deciding when a response should be
emitted and responsible for the timing of the
overall activity; the other what this
response should be and responsible for the
allocation of behavior between the two
response keys. Results from Experiment 2,
which studied choice between two
fixed-interval schedules, supported those two
conclusions. These results have implications
for the study of operant choice in general.